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<title>SpectrHA, Spectral Harmonic Analysis</title>
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<b>
SpectrHA<br>
Spectral Harmonic Analysis
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unique version, Jul-2003
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SpectrHA is a matlab tool to execute Fourier Spectral Analysis and Harmonic Least Squares Fit analysis of series.<br>
  It's designed to be used with the output of the oceanographic model <a href="http://marine.rutgers.edu/po/index.php?page=&model=roms">ROMS</a> 
  (Regional Ocean Model System), but can easily be changed to use any other sources. 
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<b>Overview:</b><p> 
-You can do Fourier Analysis and Least Squares Fit Harmonic Analysis 
 from the ROMS history file, ROMS stations file or any external serie. 
<p> -Least Squares Fit can easily be configured to any desired frequencies. 
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-SpectrHA can use <a href="http://www2.ocgy.ubc.ca/~rich/#T_Tide">T_TIDE</a>
 to perform tidal analysis and prediction. 
<p> -Previously analyzed data can be loaded, for instance, as tidal ellipses and 
  overlayed in your current analysis. 
<p> -A fast analysis of the grid used in the modeling (either <a href="http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/seagrid/seagrid.html">SEAGRID</a> 
  file or ROMS output history file) is available, as well as analysis of vertical 
  s-levels. 
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-Zhigang Xu tidal ellipse routines ap2ep and ep2ap are used and distributed.
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-This software was created with MATLAB 6.0 in Linux SuSe 8.0.<br>
  I created SpectHA to make my work easier. Hope you find it useful.
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-Copyright (c) 2003, Martinho Marta Almeida (<a href="http://www.gnu.org/licenses/gpl.txt">under GPL version 2</a>).
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<b>Requirements:</b>
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 - <a href="http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/MexCDF/nc4ml5.html">NetCDF interface</a>
for MATLAB, if you are going to use SEAGRID or ROMS files.
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 - <a href="http://www2.ocgy.ubc.ca/~rich/#T_Tide">T_TIDE</a>, for tidal analysis and prediction.
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